Hello guys

So every one writes in english and I will try it,too.
Excuse me for my English, I know it's not perfect!!

Regarding my questions.:
I play the game since two weeks and yesterday I made it... I had my first 100 crystals.
First step... I buy a second deck . Now I will change some cards from the new deck in my old deck but I
can't move cards from the second to the first deck. Are there any drag and drop options?? Is it possible?
Can I make one deck with more then 42 cards?? I thought I had the chance to mixed the cards from every deck.
If I buy cards I ha it in my actually deck. If I forgott to switch in my right deck, the card is on the wrong place....

I hope you understand me

thank you very much for your helpfulness